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Alopecia totalis is the loss of all hair on the head and face.Its causes are unclear, but believed to be autoimmune.Research suggests there may be a genetic component linked to developing alopecia totalis; the presence of DRB1*0401 and DQB1*0301, both of which are human leukocyte antigens (HLA), were found to be associated with long-standing alopecia totalis.
Alopecia universalis (AU), also known as alopecia areata universalis, is a medical condition involving the loss of all body hair, including eyebrows, eyelashes, chest hair, armpit hair, and pubic hair. It is the most severe form of alopecia areata (AA). [1]
No loss of body function occurs, and the effects of alopecia areata are psychological (loss of self-image due to hair loss), although these can be severe. Loss of hair also means the scalp burns more easily in the sun. Patients may also have aberrant nail formation because keratin forms both hair and nails. [citation needed]
Alopecia occurs for various reasons, including genetics, autoimmune disorders where the immune system attacks hair follicles, hormonal changes, medical treatments like chemotherapy, or other factors.
The Most Common Causes of Hair Loss in Elderly Women. Hair loss in women occurs for a variety of reasons, but hair loss in older women can also be due to factors that come specifically with age ...
The cause of male-pattern hair loss is a combination of genetics and male hormones; the cause of female pattern hair loss is unclear; the cause of alopecia areata is autoimmune; and the cause of telogen effluvium is typically a physically or psychologically stressful event. [4] Telogen effluvium is very common following pregnancy. [4]
Female hair loss can be scary. These are the most common causes for women's hair to fall out, plus treatments for shedding and how to prevent it from happening. 8 common causes of female hair loss ...
They found the gene P2RY5 causes a rare, inherited form of hair loss called hypotrichosis simplex. It is the first receptor in humans known to play a role in hair growth. [103] [104] [105] Researchers found that disruption of the gene SOX21 in mice caused cyclical hair loss.
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